Since Samsung announced the Exynos 5 Octa at CES 2013, one major criticism has been leveled at its implementation of big.Little technology time and again: for some reason, it has only ever been able to run 4 of its 8 cores at a time. Not only that, but it has never been able to mix-and-match the higher performance A15 cores with power efficient A7 cores to get the best possible configuration for performance and power usage.